[linux-audio-user] Re: Intel HDA and Jack

[Jack O'Quin]

On 6/14/06, I. E. Smith-Heisters <public at 0x09.com> wrote:
> Okay, looked at it some more. When RT is enabled, jack just locks up
> and the watchdog terminates the process, regardless of the buffer
> size. When RT is disabled the xruns are allowed to continue, and the
> number of xruns decreases with a higher buffer size (but never go
> below about 10/second). There's no evidence that RT mode has failed to
> be set. This is all as root.
>
> I am using the proprietary NVIDIA drivers, as gotten from the Ubuntu
> repositories. I would be surprised if this had anything to do with it
> though, since direct alsa works fine with the same xOrg drivers.
> Unless, of course, there's some software conflict between the video
> drivers and jack itself (as opposed to there being a hardware-level
> conflict).

It would not surprise me for the proprietary drivers to behave in
a non-realtime-safe manner.  This would affect JACK much worse
than some heavily-buffered ALSA application.

Can you try it with the open source driver to compare?
-- 
 joq